Scrapper of metal
I was trying to notch some tubing today to make handrails. My 1.75 bi-metal hole saw has very coarse teeth which tend to grab to work. Does anyone know if fine tooth bi-metal holesaws are available?
I have a whole set of those carbide cutters and they work amazing. The problem with my set is they are only 1/2" deep so are only really good for thinner materials.That carbide looks coarser than the typical coarse tooth bi-metal? I know I've seen 'fine teeth' in the big box stores Makita? Dewalt? Lennox? but just not landing on them. The regular bi-metal work surprisingly well but I they really need to have both part & drill supported vs freehand & use the center pilot drill if you can, especially where you initially only have partial contact
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Just a hole saw in my mill...what are you using to notch with ? i have notched quite a bit of pipe with one of these cheap notchers and standard bi metal hole saws with no problems
LOL - I was dumpster diving at Boeing Surplus many years ago when they were scrapping a plant in Kent.What on earth is that???
Amazing!LOL - I was dumpster diving at Boeing Surplus many years ago when they were scrapping a plant in Kent.
This is one of their precision hole saws used for cutting holes in titanium airframes. It is 8" long and much harder than a file.
Cuts a LOVELY hole!
Question really should be - why on earth do I have that?
Just a hole saw in my mill...
I may end up doing it freehand as I only have to make two angled copes.You might just not have the speed and pressure dialed in, that should do a much better job than the cheap tube notcher i use with a cordless drill on the back of the truck.
some of the higher end tube notchers use a big endmill and geed the tube into the side of the endmill....although i dont imagine you want to buy an endmill that big
the other alternative is just make 2 30 dege cuts on the end of the pipe like this /\ and a quick touch up with the grinder makes a satisfactory cope for a mig